WW4 Extended is an unofficial expansion for the WW4 modpack, the OFP & CWA mod that focus on performance. It covers modern, Cold War era and Arctic warfare, adding numerous infantry units and vehicles for all sides, and provides several visual and sound effects (tracers, bullet cracks), support options and many other features.
A desert National Army infantry unit firing from within one of the available forts. The forts have been ported from ArmA 2. Screenshot by Apocalypse83.